as you see the download rate became 2 times less.
Something wrong with PPPoE. DSL connected but ppoe ssession is not working.
Fri Apr 15 13:08:34 2016 kern.info kernel: [ 53.604000] Loading modules backported from Linux version master-2015-03-09-0-g141f155
Fri Apr 15 13:08:34 2016 kern.info kernel: [ 53.612000] Backport generated by backports.git backports-20150129-0-gdd4a670
Fri Apr 15 13:08:34 2016 kern.info kernel: [ 53.620000] ip_tables: (C) 2000-2006 Netfilter Core Team
Fri Apr 15 13:08:34 2016 kern.info kernel: [ 53.636000] ATM1.0.26 ATM (A1) firmware version 0.16
Fri Apr 15 13:08:34 2016 kern.warn kernel: [ 53.640000] ifxmips_atm: ATM init succeed
Fri Apr 15 13:08:34 2016 kern.info kernel: [ 53.664000] Infineon Technologies DEU driver version 2.0.0
Fri Apr 15 13:08:34 2016 kern.notice kernel: [ 53.672000] IFX DEU DES initialized (multiblock).
Fri Apr 15 13:08:34 2016 kern.notice kernel: [ 53.680000] IFX DEU AES initialized (multiblock).
Fri Apr 15 13:08:34 2016 kern.notice kernel: [ 53.684000] IFX DEU ARC4 initialized (multiblock).
Fri Apr 15 13:08:34 2016 kern.notice kernel: [ 53.692000] IFX DEU SHA1 initialized.
Fri Apr 15 13:08:34 2016 kern.notice kernel: [ 53.692000] IFX DEU MD5 initialized.
Fri Apr 15 13:08:34 2016 kern.notice kernel: [ 53.700000] IFX DEU SHA1_HMAC initialized.
Fri Apr 15 13:08:34 2016 kern.notice kernel: [ 53.700000] IFX DEU MD5_HMAC initialized.
Fri Apr 15 13:08:34 2016 kern.info kernel: [ 53.716000] nf_conntrack version 0.5.0 (942 buckets, 3768 max)
Fri Apr 15 13:08:34 2016 kern.info kernel: [ 53.768000] NET: Registered protocol family 24
Fri Apr 15 13:08:34 2016 kern.info kernel: [ 53.808000] xt_time: kernel timezone is -0000
Fri Apr 15 13:08:34 2016 kern.info kernel: [ 54.040000] cfg80211: Calling CRDA to update world regulatory domain
Fri Apr 15 13:08:34 2016 kern.info kernel: [ 54.068000] cfg80211: World regulatory domain updated:
Fri Apr 15 13:08:34 2016 kern.info kernel: [ 54.072000] cfg80211: DFS Master region: unset
Fri Apr 15 13:08:34 2016 kern.info kernel: [ 54.076000] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)
Fri Apr 15 13:08:34 2016 kern.info kernel: [ 54.084000] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (N/A, 2000 mBm), (N/A)
Fri Apr 15 13:08:34 2016 kern.info kernel: [ 54.092000] cfg80211: (2457000 KHz - 2482000 KHz @ 20000 KHz, 92000 KHz AUTO), (N/A, 2000 mBm), (N/A)
Fri Apr 15 13:08:34 2016 kern.info kernel: [ 54.104000] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (N/A, 2000 mBm), (N/A)
Fri Apr 15 13:08:34 2016 kern.info kernel: [ 54.112000] cfg80211: (5170000 KHz - 5250000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (N/A)
Fri Apr 15 13:08:34 2016 kern.info kernel: [ 54.120000] cfg80211: (5250000 KHz - 5330000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (0 s)
Fri Apr 15 13:08:34 2016 kern.info kernel: [ 54.128000] cfg80211: (5490000 KHz - 5730000 KHz @ 160000 KHz), (N/A, 2000 mBm), (0 s)
Fri Apr 15 13:08:34 2016 kern.info kernel: [ 54.136000] cfg80211: (5735000 KHz - 5835000 KHz @ 80000 KHz), (N/A, 2000 mBm), (N/A)
Fri Apr 15 13:08:34 2016 kern.info kernel: [ 54.144000] cfg80211: (57240000 KHz - 63720000 KHz @ 2160000 KHz), (N/A, 0 mBm), (N/A)
Fri Apr 15 13:08:34 2016 kern.warn kernel: [ 59.356000] PCI: Enabling device 0000:00:0e.0 (0000 -> 0002)
Fri Apr 15 13:08:34 2016 kern.debug kernel: [ 59.368000] ath: EEPROM regdomain: 0x0
Fri Apr 15 13:08:34 2016 kern.debug kernel: [ 59.368000] ath: EEPROM indicates default country code should be used
Fri Apr 15 13:08:34 2016 kern.debug kernel: [ 59.368000] ath: doing EEPROM country->regdmn map search
Fri Apr 15 13:08:34 2016 kern.debug kernel: [ 59.368000] ath: country maps to regdmn code: 0x3a
Fri Apr 15 13:08:34 2016 kern.debug kernel: [ 59.368000] ath: Country alpha2 being used: US
Fri Apr 15 13:08:34 2016 kern.debug kernel: [ 59.368000] ath: Regpair used: 0x3a
Fri Apr 15 13:08:34 2016 kern.debug kernel: [ 59.388000] ieee80211 phy0: Selected rate control algorithm 'minstrel_ht'
Fri Apr 15 13:08:34 2016 kern.info kernel: [ 59.392000] ieee80211 phy0: Atheros AR9280 Rev:2 mem=0xb8000000, irq=30
Fri Apr 15 13:08:34 2016 kern.info kernel: [ 59.396000] cfg80211: Calling CRDA for country: US
Fri Apr 15 13:08:34 2016 kern.info kernel: [ 59.448000] cfg80211: Regulatory domain changed to country: US
Fri Apr 15 13:08:34 2016 kern.info kernel: [ 59.452000] cfg80211: DFS Master region: FCC
Fri Apr 15 13:08:34 2016 kern.info kernel: [ 59.456000] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)
Fri Apr 15 13:08:34 2016 kern.info kernel: [ 59.464000] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (N/A, 3000 mBm), (N/A)
Fri Apr 15 13:08:34 2016 kern.info kernel: [ 59.472000] cfg80211: (5170000 KHz - 5250000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2300 mBm), (N/A)
Fri Apr 15 13:08:34 2016 kern.info kernel: [ 59.484000] cfg80211: (5250000 KHz - 5330000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2300 mBm), (0 s)
Fri Apr 15 13:08:34 2016 kern.info kernel: [ 59.492000] cfg80211: (5490000 KHz - 5730000 KHz @ 160000 KHz), (N/A, 2300 mBm), (0 s)
Fri Apr 15 13:08:34 2016 kern.info kernel: [ 59.500000] cfg80211: (5735000 KHz - 5835000 KHz @ 80000 KHz), (N/A, 3000 mBm), (N/A)
Fri Apr 15 13:08:34 2016 kern.info kernel: [ 59.508000] cfg80211: (57240000 KHz - 63720000 KHz @ 2160000 KHz), (N/A, 4000 mBm), (N/A)
Fri Apr 15 13:08:42 2016 user.emerg syslog: sh: bad number
Fri Apr 15 13:08:49 2016 kern.info kernel: [ 79.376000] device eth0.1 entered promiscuous mode
Fri Apr 15 13:08:49 2016 kern.info kernel: [ 79.380000] device eth0 entered promiscuous mode
Fri Apr 15 13:08:49 2016 kern.info kernel: [ 79.392000] br-lan: port 1(eth0.1) entered forwarding state
Fri Apr 15 13:08:49 2016 kern.info kernel: [ 79.396000] br-lan: port 1(eth0.1) entered forwarding state
Fri Apr 15 13:08:49 2016 daemon.notice netifd: Interface 'lan' is enabled
Fri Apr 15 13:08:49 2016 daemon.notice netifd: Interface 'lan' is setting up now
Fri Apr 15 13:08:49 2016 daemon.notice netifd: Interface 'lan' is now up
Fri Apr 15 13:08:49 2016 daemon.notice netifd: Interface 'loopback' is enabled
Fri Apr 15 13:08:49 2016 daemon.notice netifd: Interface 'loopback' is setting up now
Fri Apr 15 13:08:49 2016 daemon.notice netifd: Interface 'loopback' is now up
Fri Apr 15 13:08:49 2016 daemon.notice netifd: Bridge 'br-lan' link is up
Fri Apr 15 13:08:49 2016 daemon.notice netifd: Interface 'lan' has link connectivity
Fri Apr 15 13:08:49 2016 daemon.notice netifd: Network device 'eth0' link is up
Fri Apr 15 13:08:49 2016 daemon.notice netifd: VLAN 'eth0.1' link is up
Fri Apr 15 13:08:49 2016 daemon.notice netifd: Network device 'lo' link is up
Fri Apr 15 13:08:49 2016 daemon.notice netifd: Interface 'loopback' has link connectivity
Fri Apr 15 13:08:50 2016 user.notice firewall: Reloading firewall due to ifup of lan (br-lan)
Fri Apr 15 13:08:51 2016 kern.info kernel: [ 81.400000] br-lan: port 1(eth0.1) entered forwarding state
Fri Apr 15 13:08:55 2016 local2.notice br2684ctl[784]: Interface "nas0" created sucessfully
Fri Apr 15 13:08:55 2016 local2.notice br2684ctl[784]: Communicating over ATM 0.1.32, encapsulation: LLC
Fri Apr 15 13:08:55 2016 daemon.notice netifd: Interface 'wan' is enabled
Fri Apr 15 13:08:55 2016 local2.info br2684ctl[784]: Interface configured
Fri Apr 15 13:08:55 2016 local2.info br2684ctl[784]: RFC 1483/2684 bridge daemon started
Fri Apr 15 13:08:58 2016 kern.info kernel: [ 89.212000] cfg80211: Calling CRDA for country: UA
Fri Apr 15 13:08:59 2016 kern.info kernel: [ 89.252000] cfg80211: Regulatory domain changed to country: UA
Fri Apr 15 13:08:59 2016 kern.info kernel: [ 89.256000] cfg80211: DFS Master region: ETSI
Fri Apr 15 13:08:59 2016 kern.info kernel: [ 89.260000] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)
Fri Apr 15 13:08:59 2016 kern.info kernel: [ 89.268000] cfg80211: (2400000 KHz - 2483000 KHz @ 40000 KHz), (N/A, 2000 mBm), (N/A)
Fri Apr 15 13:08:59 2016 kern.info kernel: [ 89.276000] cfg80211: (5150000 KHz - 5250000 KHz @ 80000 KHz, 200000 KHz AUTO), (N/A, 2000 mBm), (N/A)
Fri Apr 15 13:08:59 2016 kern.info kernel: [ 89.288000] cfg80211: (5250000 KHz - 5350000 KHz @ 80000 KHz, 200000 KHz AUTO), (N/A, 2000 mBm), (0 s)
Fri Apr 15 13:08:59 2016 kern.info kernel: [ 89.296000] cfg80211: (5490000 KHz - 5670000 KHz @ 160000 KHz), (N/A, 2000 mBm), (0 s)
Fri Apr 15 13:08:59 2016 kern.info kernel: [ 89.304000] cfg80211: (5735000 KHz - 5835000 KHz @ 80000 KHz), (N/A, 2000 mBm), (N/A)
Fri Apr 15 13:08:59 2016 kern.info kernel: [ 89.312000] cfg80211: (57000000 KHz - 66000000 KHz @ 2160000 KHz), (N/A, 4000 mBm), (N/A)
Fri Apr 15 13:08:59 2016 authpriv.info dropbear[900]: Not backgrounding
Fri Apr 15 13:09:00 2016 daemon.info dnsmasq[985]: started, version 2.73 cachesize 150
Fri Apr 15 13:09:00 2016 daemon.info dnsmasq[985]: compile time options: IPv6 GNU-getopt no-DBus no-i18n no-IDN DHCP no-DHCPv6 no-Lua TFTP no-conntrack no-ipset no-auth no-DNSSEC loop-detect inotify
Fri Apr 15 13:09:00 2016 daemon.info dnsmasq[985]: DNS service limited to local subnets
Fri Apr 15 13:09:00 2016 daemon.info dnsmasq-dhcp[985]: DHCP, IP range 192.168.1.100 -- 192.168.1.249, lease time 12h
Fri Apr 15 13:09:00 2016 daemon.info dnsmasq[985]: using local addresses only for domain lan
Fri Apr 15 13:09:00 2016 daemon.warn dnsmasq[985]: no servers found in /tmp/resolv.conf.auto, will retry
Fri Apr 15 13:09:00 2016 daemon.info dnsmasq[985]: read /etc/hosts - 1 addresses
Fri Apr 15 13:09:00 2016 daemon.info dnsmasq[985]: read /tmp/hosts/dhcp - 1 addresses
Fri Apr 15 13:09:00 2016 daemon.info dnsmasq-dhcp[985]: read /etc/ethers - 0 addresses
Fri Apr 15 13:09:01 2016 kern.info kernel: [ 91.736000] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
Fri Apr 15 13:09:01 2016 daemon.notice netifd: radio0 (779): Configuration file: /var/run/hostapd-phy0.conf
Fri Apr 15 13:09:01 2016 kern.info kernel: [ 91.792000] device wlan0 entered promiscuous mode
Fri Apr 15 13:09:01 2016 kern.info kernel: [ 91.796000] br-lan: port 2(wlan0) entered forwarding state
Fri Apr 15 13:09:01 2016 kern.info kernel: [ 91.800000] br-lan: port 2(wlan0) entered forwarding state
Fri Apr 15 13:09:01 2016 daemon.notice netifd: radio0 (779): wlan0: interface state UNINITIALIZED->COUNTRY_UPDATE
Fri Apr 15 13:09:01 2016 daemon.notice netifd: radio0 (779): wlan0: interface state COUNTRY_UPDATE->HT_SCAN
Fri Apr 15 13:09:01 2016 kern.info kernel: [ 91.904000] br-lan: port 2(wlan0) entered disabled state
Fri Apr 15 13:09:02 2016 user.emerg syslog: setting up led wifi
Fri Apr 15 13:09:02 2016 user.emerg syslog: setting up led usb
Fri Apr 15 13:09:02 2016 user.emerg syslog: setting up led internet
Fri Apr 15 13:09:02 2016 user.emerg syslog: setting up led dsl
Fri Apr 15 13:09:02 2016 user.emerg syslog: setting up led power
Fri Apr 15 13:09:02 2016 user.emerg syslog: setting up led wps
Fri Apr 15 13:09:02 2016 daemon.notice netifd: radio0 (779): handle_probe_req: send failed
Fri Apr 15 13:09:02 2016 daemon.notice netifd: radio0 (779): handle_probe_req: send failed
Fri Apr 15 13:09:02 2016 daemon.notice netifd: radio0 (779): Using interface wlan0 with hwaddr 00:26:f2:52:55:72 and ssid "26-17-4-30"
Fri Apr 15 13:09:02 2016 kern.info kernel: [ 92.996000] br-lan: port 2(wlan0) entered forwarding state
Fri Apr 15 13:09:02 2016 kern.info kernel: [ 93.000000] br-lan: port 2(wlan0) entered forwarding state
Fri Apr 15 13:09:02 2016 kern.info kernel: [ 93.008000] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
Fri Apr 15 13:09:02 2016 daemon.notice netifd: radio0 (779): wlan0: interface state HT_SCAN->ENABLED
Fri Apr 15 13:09:02 2016 daemon.notice netifd: radio0 (779): wlan0: AP-ENABLED
Fri Apr 15 13:09:03 2016 daemon.notice netifd: Network device 'wlan0' link is up
Fri Apr 15 13:09:03 2016 daemon.info procd: - init complete -
Fri Apr 15 13:09:04 2016 kern.info kernel: [ 95.004000] br-lan: port 2(wlan0) entered forwarding state
Fri Apr 15 13:09:08 2016 daemon.info hostapd: wlan0: STA 7c:0b:c6:24:d9:65 IEEE 802.11: authenticated
Fri Apr 15 13:09:08 2016 daemon.info hostapd: wlan0: STA 7c:0b:c6:24:d9:65 IEEE 802.11: associated (aid 1)
Fri Apr 15 13:09:08 2016 daemon.info dnsmasq-dhcp[985]: DHCPREQUEST(br-lan) 192.168.1.195 7c:0b:c6:24:d9:65
Fri Apr 15 13:09:08 2016 daemon.info dnsmasq-dhcp[985]: DHCPACK(br-lan) 192.168.1.195 7c:0b:c6:24:d9:65 android-c91e86a4ac179b10
Fri Apr 15 13:09:17 2016 daemon.info hostapd: wlan0: STA 64:cc:2e:48:96:24 IEEE 802.11: authenticated
Fri Apr 15 13:09:17 2016 daemon.info hostapd: wlan0: STA 64:cc:2e:48:96:24 IEEE 802.11: associated (aid 2)
Fri Apr 15 13:09:18 2016 daemon.info dnsmasq-dhcp[985]: DHCPREQUEST(br-lan) 192.168.1.176 64:cc:2e:48:96:24
Fri Apr 15 13:09:18 2016 daemon.info dnsmasq-dhcp[985]: DHCPACK(br-lan) 192.168.1.176 64:cc:2e:48:96:24 Redmi3-Redmi
Fri Apr 15 13:09:24 2016 daemon.info dnsmasq-dhcp[985]: DHCPDISCOVER(br-lan) 192.168.1.205 e0:69:95:68:58:09
Fri Apr 15 13:09:24 2016 daemon.info dnsmasq-dhcp[985]: DHCPOFFER(br-lan) 192.168.1.205 e0:69:95:68:58:09
Fri Apr 15 13:09:24 2016 daemon.info dnsmasq-dhcp[985]: DHCPREQUEST(br-lan) 192.168.1.205 e0:69:95:68:58:09
Fri Apr 15 13:09:24 2016 daemon.info dnsmasq-dhcp[985]: DHCPACK(br-lan) 192.168.1.205 e0:69:95:68:58:09 DP67DE
Fri Apr 15 13:09:24 2016 daemon.warn odhcpd[743]: DHCPV6 SOLICIT IA_NA from 000100011e3013f8e06995685809 on br-lan: ok fd5b:5aeb:3bf3::d2c/128
Fri Apr 15 13:09:24 2016 daemon.info dnsmasq[985]: read /etc/hosts - 1 addresses
Fri Apr 15 13:09:24 2016 daemon.info dnsmasq[985]: read /tmp/hosts/odhcpd - 0 addresses
Fri Apr 15 13:09:24 2016 daemon.info dnsmasq[985]: read /tmp/hosts/dhcp - 1 addresses
Fri Apr 15 13:09:24 2016 daemon.info dnsmasq-dhcp[985]: read /etc/ethers - 0 addresses
Fri Apr 15 13:09:25 2016 daemon.warn odhcpd[743]: DHCPV6 SOLICIT IA_NA from 000100011e3013f8e06995685809 on br-lan: ok fd5b:5aeb:3bf3::d2c/128
Fri Apr 15 13:09:26 2016 daemon.warn odhcpd[743]: DHCPV6 SOLICIT IA_NA from 000100011e3013f8e06995685809 on br-lan: ok fd5b:5aeb:3bf3::d2c/128
Fri Apr 15 13:09:26 2016 daemon.warn odhcpd[743]: DHCPV6 REQUEST IA_NA from 000100011e3013f8e06995685809 on br-lan: ok fd5b:5aeb:3bf3::d2c/128
Fri Apr 15 13:09:26 2016 daemon.info dnsmasq[985]: read /etc/hosts - 1 addresses
Fri Apr 15 13:09:26 2016 daemon.info dnsmasq[985]: read /tmp/hosts/odhcpd - 1 addresses
Fri Apr 15 13:09:26 2016 daemon.info dnsmasq[985]: read /tmp/hosts/dhcp - 1 addresses
Fri Apr 15 13:09:26 2016 daemon.info dnsmasq-dhcp[985]: read /etc/ethers - 0 addresses
Fri Apr 15 13:09:38 2016 kern.err kernel: [ 128.820000] [DSL_BSP_Showtime 894]: Datarate US intl = 2140988, fast = 0
Fri Apr 15 13:09:38 2016 kern.warn kernel: [ 128.824000] enter showtime, cell rate: 0 - 5049, 1 - 5049, xdata addr: 0x82e40000