Cannot download till re-real sysctl.conf

Hi guys.

I'm using "OpenWrt SNAPSHOT r11508-000b7687bc" and hit wierld issue. After router reboot I cannot open any TCP connections from router till re-read sysctl.conf

+++++++++++++
root@a81m3:/home/sam# ping -c 2 downloads.openwrt.org
PING downloads.openwrt.org (176.9.48.73): 56 data bytes
64 bytes from 176.9.48.73: seq=0 ttl=55 time=98.243 ms
64 bytes from 176.9.48.73: seq=1 ttl=55 time=98.154 ms

--- downloads.openwrt.org ping statistics ---
2 packets transmitted, 2 packets received, 0% packet loss
round-trip min/avg/max = 98.154/98.198/98.243 ms
root@a81m3:/home/sam#
root@a81m3:/home/sam#
root@a81m3:/home/sam#
root@a81m3:/home/sam# wget http://downloads.openwrt.org/snapshots/packages/mips_24kc/telephony/Packages.gz
Downloading 'http://downloads.openwrt.org/snapshots/packages/mips_24kc/telephony/Packages.gz'
Failed to establish connection
root@a81m3:/home/sam#
root@a81m3:/home/sam#
root@a81m3:/home/sam#
root@a81m3:/home/sam# sysctl -p
net.ipv6.conf.all.disable_ipv6 = 1
root@a81m3:/home/sam#
root@a81m3:/home/sam#
root@a81m3:/home/sam#
root@a81m3:/home/sam# wget http://downloads.openwrt.org/snapshots/packages/mips_24kc/telephony/Packages.gz
Downloading 'http://downloads.openwrt.org/snapshots/packages/mips_24kc/telephony/Packages.gz'
Connecting to 176.9.48.73:80
Writing to 'Packages.gz'
Packages.gz 100% |*******************************| 69188 0:00:00 ETA
Download completed (69188 bytes)
root@a81m3:/home/sam#
+++++++++++++

it looks like system didn't apply parameters from sysctl.conf during boot?
do you have any idea what it could be? or possible MTU issue but my sysctl.conf has anything related to MTU

it's pretty short, just disabling IPv6:

++++++++++++++++++
root@a81m3:/home/sam# cat /etc/sysctl.conf
net.ipv6.conf.all.disable_ipv6 = 1
root@a81m3:/home/sam#
++++++++++++++++++

Thank you in advance.

Downloading 'http://downloads.openwrt.org/snapshots/packages/mips_24kc/telephony/Packages.gz'
Failed to establish connection
net.ipv6.conf.all.disable_ipv6 = 1
Downloading 'http://downloads.openwrt.org/snapshots/packages/mips_24kc/telephony/Packages.gz'
Connecting to 176.9.48.73:80

Looks like you're getting IPv6 addresses but, for some reason, don't have IPv6 connectivity.

I used the preformatted-text button, </>

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