Thanks for quick help

Some drawbacks noted in comments, such as bufferbloat between router restart timing and ISP speed reduction timing. Plus router restart and related disruption. So will keep this in abeyance

will study and implement and revert. Networking is not exactly my area, still early days.

Meanwhile will try NAT for neighbours. Please advise the modus operandi to enable NAT as below.

Appreciate if you can share any links to update the above and if this would work to add 2nd NAT. Just a trial and explore this world, i know not fair

Also, could take the contents from CLI, it relatively huge text file

For "cat /etc/config/sqm"

```
config queue 'eth1'
option qdisc_advanced '0'
option debug_logging '0'
option verbosity '5'
option qdisc 'cake'
option script 'piece_of_cake.qos'
option linklayer 'ethernet'
option overhead '44'
option linklayer_advanced '1'
option tcMTU '2047'
option tcTSIZE '128'
option tcMPU '0'
option linklayer_adaptation_mechanism 'default'
option enabled '1'
option upload '12000'
option download '20000'
option interface 'eth0.1'
config queue
option debug_logging '0'
option verbosity '5'
option script 'simple.qos'
option linklayer 'none'
option enabled '1'
option interface 'br-RanWIFI'
option qdisc_advanced '0'
option qdisc 'cake'
option download '0'
option upload '2500'
tc -s qdisc
its quite big
qdisc noqueue 0: dev lo root refcnt 2
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
qdisc mq 0: dev eth1 root
Sent 1286757 bytes 4397 pkt (dropped 0, overlimits 0 requeues 5)
backlog 0b 0p requeues 5
qdisc fq_codel 0: dev eth1 parent :8 limit 10240p flows 1024 quantum 1514 target 5.0ms interval 100.0ms memory_limit 4Mb ecn
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
maxpacket 0 drop_overlimit 0 new_flow_count 0 ecn_mark 0
new_flows_len 0 old_flows_len 0
qdisc fq_codel 0: dev eth1 parent :7 limit 10240p flows 1024 quantum 1514 target 5.0ms interval 100.0ms memory_limit 4Mb ecn
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
maxpacket 0 drop_overlimit 0 new_flow_count 0 ecn_mark 0
new_flows_len 0 old_flows_len 0
qdisc fq_codel 0: dev eth1 parent :6 limit 10240p flows 1024 quantum 1514 target 5.0ms interval 100.0ms memory_limit 4Mb ecn
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
maxpacket 0 drop_overlimit 0 new_flow_count 0 ecn_mark 0
new_flows_len 0 old_flows_len 0
qdisc fq_codel 0: dev eth1 parent :5 limit 10240p flows 1024 quantum 1514 target 5.0ms interval 100.0ms memory_limit 4Mb ecn
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
maxpacket 0 drop_overlimit 0 new_flow_count 0 ecn_mark 0
new_flows_len 0 old_flows_len 0
qdisc fq_codel 0: dev eth1 parent :4 limit 10240p flows 1024 quantum 1514 target 5.0ms interval 100.0ms memory_limit 4Mb ecn
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
maxpacket 0 drop_overlimit 0 new_flow_count 0 ecn_mark 0
new_flows_len 0 old_flows_len 0
qdisc fq_codel 0: dev eth1 parent :3 limit 10240p flows 1024 quantum 1514 target 5.0ms interval 100.0ms memory_limit 4Mb ecn
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
maxpacket 0 drop_overlimit 0 new_flow_count 0 ecn_mark 0
new_flows_len 0 old_flows_len 0
qdisc fq_codel 0: dev eth1 parent :2 limit 10240p flows 1024 quantum 1514 target 5.0ms interval 100.0ms memory_limit 4Mb ecn
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
maxpacket 0 drop_overlimit 0 new_flow_count 0 ecn_mark 0
new_flows_len 0 old_flows_len 0
qdisc fq_codel 0: dev eth1 parent :1 limit 10240p flows 1024 quantum 1514 target 5.0ms interval 100.0ms memory_limit 4Mb ecn
Sent 1286757 bytes 4397 pkt (dropped 0, overlimits 0 requeues 5)
backlog 0b 0p requeues 5
maxpacket 1454 drop_overlimit 0 new_flow_count 5 ecn_mark 0
new_flows_len 0 old_flows_len 0
qdisc mq 0: dev eth0 root
Sent 539298 bytes 2356 pkt (dropped 0, overlimits 0 requeues 12)
backlog 0b 0p requeues 12
qdisc fq_codel 0: dev eth0 parent :8 limit 10240p flows 1024 quantum 1514 target 5.0ms interval 100.0ms memory_limit 4Mb ecn
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
maxpacket 0 drop_overlimit 0 new_flow_count 0 ecn_mark 0
new_flows_len 0 old_flows_len 0
qdisc fq_codel 0: dev eth0 parent :7 limit 10240p flows 1024 quantum 1514 target 5.0ms interval 100.0ms memory_limit 4Mb ecn
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
maxpacket 0 drop_overlimit 0 new_flow_count 0 ecn_mark 0
new_flows_len 0 old_flows_len 0
qdisc fq_codel 0: dev eth0 parent :6 limit 10240p flows 1024 quantum 1514 target 5.0ms interval 100.0ms memory_limit 4Mb ecn
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
maxpacket 0 drop_overlimit 0 new_flow_count 0 ecn_mark 0
new_flows_len 0 old_flows_len 0
qdisc fq_codel 0: dev eth0 parent :5 limit 10240p flows 1024 quantum 1514 target 5.0ms interval 100.0ms memory_limit 4Mb ecn
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
maxpacket 0 drop_overlimit 0 new_flow_count 0 ecn_mark 0
new_flows_len 0 old_flows_len 0
qdisc fq_codel 0: dev eth0 parent :4 limit 10240p flows 1024 quantum 1514 target 5.0ms interval 100.0ms memory_limit 4Mb ecn
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
maxpacket 0 drop_overlimit 0 new_flow_count 0 ecn_mark 0
new_flows_len 0 old_flows_len 0
qdisc fq_codel 0: dev eth0 parent :3 limit 10240p flows 1024 quantum 1514 target 5.0ms interval 100.0ms memory_limit 4Mb ecn
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
maxpacket 0 drop_overlimit 0 new_flow_count 0 ecn_mark 0
new_flows_len 0 old_flows_len 0
qdisc fq_codel 0: dev eth0 parent :2 limit 10240p flows 1024 quantum 1514 target 5.0ms interval 100.0ms memory_limit 4Mb ecn
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
maxpacket 0 drop_overlimit 0 new_flow_count 0 ecn_mark 0
new_flows_len 0 old_flows_len 0
qdisc fq_codel 0: dev eth0 parent :1 limit 10240p flows 1024 quantum 1514 target 5.0ms interval 100.0ms memory_limit 4Mb ecn
Sent 539298 bytes 2356 pkt (dropped 0, overlimits 0 requeues 12)
backlog 0b 0p requeues 12
maxpacket 1540 drop_overlimit 0 new_flow_count 4 ecn_mark 0
new_flows_len 0 old_flows_len 0
qdisc cake 800c: dev br-RanWIFI root refcnt 2 bandwidth 2500Kbit diffserv3 tripl e-isolate nonat nowash no-ack-filter split-gso rtt 100.0ms raw overhead 0
Sent 339903 bytes 693 pkt (dropped 8, overlimits 413 requeues 0)
backlog 0b 0p requeues 0
memory used: 40352b of 4Mb
capacity estimate: 2500Kbit
min/max network layer size: 42 / 1454
min/max overhead-adjusted size: 42 / 1454
average network hdr offset: 13
Bulk Best Effort Voice
thresh 156248bit 2500Kbit 625Kbit
target 116.3ms 7.3ms 29.1ms
interval 232.6ms 102.3ms 124.1ms
pk_delay 0us 52.8ms 1.1ms
av_delay 0us 11.1ms 28us
sp_delay 0us 4us 6us
backlog 0b 0b 0b
pkts 0 661 40
bytes 0 344011 4994
way_inds 0 0 0
way_miss 0 78 4
way_cols 0 0 0
drops 0 8 0
marks 0 0 0
ack_drop 0 0 0
sp_flows 0 1 0
bk_flows 0 2 0
un_flows 0 0 0
max_len 0 9986 356
quantum 300 300 300
qdisc noqueue 0: dev eth0.4 root refcnt 2
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
qdisc noqueue 0: dev br-lan root refcnt 2
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
qdisc cake 8005: dev eth0.1 root refcnt 2 bandwidth 12Mbit besteffort triple-iso late nonat nowash no-ack-filter split-gso rtt 100.0ms noatm overhead 44
Sent 67443 bytes 540 pkt (dropped 0, overlimits 154 requeues 0)
backlog 0b 0p requeues 0
memory used: 17152b of 4Mb
capacity estimate: 12Mbit
min/max network layer size: 6 / 704
min/max overhead-adjusted size: 50 / 748
average network hdr offset: 12
Tin 0
thresh 12Mbit
target 5.0ms
interval 100.0ms
pk_delay 232us
av_delay 21us
sp_delay 3us
backlog 0b
pkts 540
bytes 67443
way_inds 0
way_miss 131
way_cols 0
drops 0
marks 0
ack_drop 0
sp_flows 1
bk_flows 1
un_flows 0
max_len 718
quantum 366
qdisc ingress ffff: dev eth0.1 parent ffff:fff1 ----------------
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
qdisc noqueue 0: dev br-vlan3share root refcnt 2
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
qdisc noqueue 0: dev eth0.3 root refcnt 2
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
qdisc noqueue 0: dev br-wan root refcnt 2
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
qdisc noqueue 0: dev eth1.2 root refcnt 2
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
qdisc cake 8006: dev ifb4eth0.1 root refcnt 2 bandwidth 20Mbit besteffort triple -isolate nonat wash no-ack-filter split-gso rtt 100.0ms noatm overhead 44
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
memory used: 0b of 4Mb
capacity estimate: 20Mbit
min/max network layer size: 65535 / 0
min/max overhead-adjusted size: 65535 / 0
average network hdr offset: 0
Tin 0
thresh 20Mbit
target 5.0ms
interval 100.0ms
pk_delay 0us
av_delay 0us
sp_delay 0us
backlog 0b
pkts 0
bytes 0
way_inds 0
way_miss 0
way_cols 0
drops 0
marks 0
ack_drop 0
sp_flows 0
bk_flows 0
un_flows 0
max_len 0
quantum 610
qdisc mq 0: dev wlan0 root
Sent 67381 bytes 543 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
qdisc fq_codel 0: dev wlan0 parent :4 limit 10240p flows 1024 quantum 1514 targe t 5.0ms interval 100.0ms memory_limit 4Mb ecn
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
maxpacket 0 drop_overlimit 0 new_flow_count 0 ecn_mark 0
new_flows_len 0 old_flows_len 0
qdisc fq_codel 0: dev wlan0 parent :3 limit 10240p flows 1024 quantum 1514 targe t 5.0ms interval 100.0ms memory_limit 4Mb ecn
Sent 67381 bytes 543 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
maxpacket 0 drop_overlimit 0 new_flow_count 0 ecn_mark 0
new_flows_len 0 old_flows_len 0
qdisc fq_codel 0: dev wlan0 parent :2 limit 10240p flows 1024 quantum 1514 targe t 5.0ms interval 100.0ms memory_limit 4Mb ecn
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
maxpacket 0 drop_overlimit 0 new_flow_count 0 ecn_mark 0
new_flows_len 0 old_flows_len 0
qdisc fq_codel 0: dev wlan0 parent :1 limit 10240p flows 1024 quantum 1514 targe t 5.0ms interval 100.0ms memory_limit 4Mb ecn
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
maxpacket 0 drop_overlimit 0 new_flow_count 0 ecn_mark 0
new_flows_len 0 old_flows_len 0
qdisc mq 0: dev wlan1 root
Sent 1685882 bytes 3706 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
qdisc fq_codel 0: dev wlan1 parent :4 limit 10240p flows 1024 quantum 1514 targe t 5.0ms interval 100.0ms memory_limit 4Mb ecn
Sent 17232 bytes 38 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
maxpacket 0 drop_overlimit 0 new_flow_count 0 ecn_mark 0
new_flows_len 0 old_flows_len 0
qdisc fq_codel 0: dev wlan1 parent :3 limit 10240p flows 1024 quantum 1514 targe t 5.0ms interval 100.0ms memory_limit 4Mb ecn
Sent 1461638 bytes 3365 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
maxpacket 0 drop_overlimit 0 new_flow_count 0 ecn_mark 0
new_flows_len 0 old_flows_len 0
qdisc fq_codel 0: dev wlan1 parent :2 limit 10240p flows 1024 quantum 1514 targe t 5.0ms interval 100.0ms memory_limit 4Mb ecn
Sent 206371 bytes 300 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
maxpacket 0 drop_overlimit 0 new_flow_count 0 ecn_mark 0
new_flows_len 0 old_flows_len 0
qdisc fq_codel 0: dev wlan1 parent :1 limit 10240p flows 1024 quantum 1514 targe t 5.0ms interval 100.0ms memory_limit 4Mb ecn
Sent 641 bytes 3 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
maxpacket 0 drop_overlimit 0 new_flow_count 0 ecn_mark 0
new_flows_len 0 old_flows_len 0
qdisc mq 0: dev wlan1-1 root
Sent 416104 bytes 856 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
qdisc fq_codel 0: dev wlan1-1 parent :4 limit 10240p flows 1024 quantum 1514 tar get 5.0ms interval 100.0ms memory_limit 4Mb ecn
Sent 102181 bytes 76 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
maxpacket 0 drop_overlimit 0 new_flow_count 0 ecn_mark 0
new_flows_len 0 old_flows_len 0
qdisc fq_codel 0: dev wlan1-1 parent :3 limit 10240p flows 1024 quantum 1514 tar get 5.0ms interval 100.0ms memory_limit 4Mb ecn
Sent 262976 bytes 655 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
maxpacket 0 drop_overlimit 0 new_flow_count 0 ecn_mark 0
new_flows_len 0 old_flows_len 0
qdisc fq_codel 0: dev wlan1-1 parent :2 limit 10240p flows 1024 quantum 1514 tar get 5.0ms interval 100.0ms memory_limit 4Mb ecn
Sent 46857 bytes 107 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
maxpacket 0 drop_overlimit 0 new_flow_count 0 ecn_mark 0
new_flows_len 0 old_flows_len 0
qdisc fq_codel 0: dev wlan1-1 parent :1 limit 10240p flows 1024 quantum 1514 tar get 5.0ms interval 100.0ms memory_limit 4Mb ecn
Sent 4090 bytes 18 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
maxpacket 0 drop_overlimit 0 new_flow_count 0 ecn_mark 0
new_flows_len 0 old_flows_len 0
qdisc mq 0: dev wlan1-2 root
Sent 66931 bytes 540 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
qdisc fq_codel 0: dev wlan1-2 parent :4 limit 10240p flows 1024 quantum 1514 tar get 5.0ms interval 100.0ms memory_limit 4Mb ecn
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
maxpacket 0 drop_overlimit 0 new_flow_count 0 ecn_mark 0
new_flows_len 0 old_flows_len 0
qdisc fq_codel 0: dev wlan1-2 parent :3 limit 10240p flows 1024 quantum 1514 tar get 5.0ms interval 100.0ms memory_limit 4Mb ecn
Sent 66931 bytes 540 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
maxpacket 0 drop_overlimit 0 new_flow_count 0 ecn_mark 0
new_flows_len 0 old_flows_len 0
qdisc fq_codel 0: dev wlan1-2 parent :2 limit 10240p flows 1024 quantum 1514 tar get 5.0ms interval 100.0ms memory_limit 4Mb ecn
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
maxpacket 0 drop_overlimit 0 new_flow_count 0 ecn_mark 0
new_flows_len 0 old_flows_len 0
qdisc fq_codel 0: dev wlan1-2 parent :1 limit 10240p flows 1024 quantum 1514 tar get 5.0ms interval 100.0ms memory_limit 4Mb ecn
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
maxpacket 0 drop_overlimit 0 new_flow_count 0 ecn_mark 0
new_flows_len 0 old_flows_len 0
```