[FS#595] odhcpd in relay mode floods network with NS packets

[LEDE Bugs]

The following task has a new comment added:

FS#595 - odhcpd in relay mode floods network with NS packets
User who did this - netprince (netprince)

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ip -6 addr show
1: lo:  mtu 65536 state UNKNOWN qlen 1
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: eth0:  mtu 1500 state UP qlen 1000
    inet6 fe80::290:a9ff:feac:2c21/64 scope link
       valid_lft forever preferred_lft forever
10: br-lan:  mtu 1500 state UP qlen 1000
    inet6 fddf:2ab8:2488:10::1/64 scope global noprefixroute
       valid_lft forever preferred_lft forever
    inet6 fe80::290:a9ff:feac:2c21/64 scope link
       valid_lft forever preferred_lft forever
12: eth0.2 at eth0:  mtu 1500 state UP qlen 1000
    inet6 ----:----:----:----:290:a9ff:feac:2c21/64 scope global noprefixroute dynamic
       valid_lft 2591918sec preferred_lft 604718sec
    inet6 fe80::290:a9ff:feac:2c21/64 scope link
       valid_lft forever preferred_lft forever
14: tun9:  mtu 1500 state UNKNOWN qlen 48
    inet6 fddf:2ab8:2488:330::512/64 scope global
       valid_lft forever preferred_lft forever

ip neigh show proxy
----:----:----:----::1 dev br-lan  proxy
fddf:2ab8:2488:10::1 dev eth0.2  proxy
----:----:----:----:1:d00d::40 dev br-lan  proxy
----:----:----:----:1:d00d::37 dev br-lan  proxy
----:----:----:----:78f2:fea6:fbd3:15a2 dev br-lan  proxy
----:----:----:----:72cd:60ff:fef3:181f dev br-lan  proxy
----:----:----:----:290:a9ff:feac:2c21 dev br-lan  proxy
----:----:----:----:945b:446d:a137:71fa dev br-lan  proxy


ip -6 neigh show
----:----:----:----:3150:4be0:2276:1e58 dev br-lan  INCOMPLETE
----:----:----:----:90c8:736e:e7a5:5309 dev eth0.2  FAILED
----:----:----:----:3406:dc33:356d:b507 dev br-lan  INCOMPLETE
----:----:----:----:c8e2:905f:4c26:6e4d dev eth0.2  INCOMPLETE
----:----:----:----:2c8e:d82:4632:bc41 dev eth0.2  FAILED
----:----:----:----:44da:1c6d:5168:2f9c dev br-lan  INCOMPLETE
----:----:----:----:945b:446d:a137:71fa dev br-lan  FAILED
----:----:----:----:e852:37cf:eb0d:6ec6 dev br-lan  INCOMPLETE
----:----:----:----:ed12:7494:d6f2:e252 dev br-lan  INCOMPLETE
----:----:----:----:f914:3130:37e9:11f6 dev eth0.2  FAILED
----:----:----:----:98b8:cca6:a4ae:777a dev eth0.2  INCOMPLETE
----:----:----:----:d4ca:9bcf:b16f:fa1c dev br-lan  INCOMPLETE
----:----:----:----:90c8:736e:e7a5:5309 dev br-lan  INCOMPLETE
----:----:----:----:1:d00d::40 dev eth0.2 lladdr 00:0d:b9:3c:d7:f9 router STALE
----:----:----:----:c8e2:905f:4c26:6e4d dev br-lan  INCOMPLETE
----:----:----:----:2c8e:d82:4632:bc41 dev br-lan  INCOMPLETE
----:----:----:----:f94d:9a2c:7d3d:25c3 dev eth0.2  INCOMPLETE
----:----:----:----:c10f:4a96:9fec:c98f dev eth0.2  INCOMPLETE
fe80::945b:446d:a137:71fa dev eth0.2 lladdr 64:00:6a:46:fa:b4 STALE
----:----:----:----:1:d00d::37 dev eth0.2 lladdr f8:b1:56:b9:29:f9 DELAY
----:----:----:----:f914:3130:37e9:11f6 dev br-lan  INCOMPLETE
----:----:----:----:98b8:cca6:a4ae:777a dev br-lan  INCOMPLETE
----:----:----:----:8c42:9741:e071:2d25 dev eth0.2  INCOMPLETE
----:----:----:----:f425:368d:474f:2b05 dev eth0.2  FAILED
----:----:----:----:940c:7a19:5006:b9ca dev eth0.2  INCOMPLETE
----:----:----:----:1:d00d::40 dev br-lan  FAILED
----:----:----:----:c0a2:f4ea:e99b:3c47 dev eth0.2  INCOMPLETE
----:----:----:----:e070:5789:9468:1854 dev eth0.2  INCOMPLETE
----:----:----:----:20d:b9ff:fe3c:d7f9 dev eth0.2  FAILED
----:----:----:----:f94d:9a2c:7d3d:25c3 dev br-lan  INCOMPLETE
----:----:----:----:3854:5501:cc28:7b4e dev eth0.2  INCOMPLETE
----:----:----:----:c10f:4a96:9fec:c98f dev br-lan  INCOMPLETE
----:----:----:----:290:a9ff:feac:2c21 dev br-lan  FAILED
----:----:----:----:d58d:572c:5b78:3d89 dev eth0.2  INCOMPLETE
----:----:----:----:8c42:9741:e071:2d25 dev br-lan  INCOMPLETE
----:----:----:----:940c:7a19:5006:b9ca dev br-lan  INCOMPLETE
----:----:----:----:f425:368d:474f:2b05 dev br-lan  INCOMPLETE
----:----:----:----::1 dev eth0.2 lladdr 80:ac:ac:ee:7a:f0 router STALE
----:----:----:----:c0a2:f4ea:e99b:3c47 dev br-lan  FAILED
----:----:----:----:e070:5789:9468:1854 dev br-lan  INCOMPLETE
----:----:----:----:dd55:2a9d:47af:d42b dev eth0.2  INCOMPLETE
fe80::82ac:ac01:33ee:7af0 dev eth0.2 lladdr 80:ac:ac:ee:7a:f0 router STALE
----:----:----:----:903f:94e3:32e8:aa9d dev eth0.2  INCOMPLETE
----:----:----:----:20d:b9ff:fe3c:d7f9 dev br-lan  INCOMPLETE
----:----:----:----:a14c:766a:69b3:ba2b dev eth0.2  INCOMPLETE
----:----:----:----:3150:4be0:2276:1e58 dev eth0.2  INCOMPLETE
----:----:----:----:3854:5501:cc28:7b4e dev br-lan  INCOMPLETE
----:----:----:----:3406:dc33:356d:b507 dev eth0.2  FAILED
----:----:----:----:44da:1c6d:5168:2f9c dev eth0.2  INCOMPLETE
----:----:----:----:d58d:572c:5b78:3d89 dev br-lan  INCOMPLETE
----:----:----:----::1 dev br-lan  FAILED
----:----:----:----:945b:446d:a137:71fa dev eth0.2 lladdr 64:00:6a:46:fa:b4 STALE
----:----:----:----:e852:37cf:eb0d:6ec6 dev eth0.2  INCOMPLETE
----:----:----:----:ed12:7494:d6f2:e252 dev eth0.2  INCOMPLETE
----:----:----:----:dd55:2a9d:47af:d42b dev br-lan  INCOMPLETE
----:----:----:----:903f:94e3:32e8:aa9d dev br-lan  FAILED
fe80::20d:b9ff:fe3c:d7f9 dev eth0.2 lladdr 00:0d:b9:3c:d7:f9 router STALE
----:----:----:----:d4ca:9bcf:b16f:fa1c dev eth0.2  INCOMPLETE
----:----:----:----:a14c:766a:69b3:ba2b dev br-lan  FAILED

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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=595#comment2105