lwIP - A Lightweight TCP/IP stack - Bugs: bug #59319, ICMPv6 neighbor solicitation fails...
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bug #59319: ICMPv6 neighbor solicitation fails if LWIP_IPV6_MLD is set
Submitter: | H. Gregor Molter <cyberdeck> | ||
Submitted: | Thu 22 Oct 2020 02:29:34 PM UTC | ||
Category: | IPv6 | Severity: | 3 - Normal |
Item Group: | Faulty Behaviour | Status: | Works For Me |
Privacy: | Public | Assigned to: | None |
Open/Closed: | Closed | Planned Release: | None |
lwIP version: | git head |
Sat 06 Feb 2021 03:07:23 PM UTC, comment #2: |
Erik Ekman <yarrick> |
Mon 18 Jan 2021 09:05:03 PM UTC, comment #1: I agree that this seems strange.
|
Erik Ekman <yarrick> |
Thu 22 Oct 2020 02:29:34 PM UTC, original submission:
In the IPv6 stack neighbor solicitation packages are dropped if LWIP_IPV6_MLD is set. For me it seems that this is a logical bug included in the ip6.c source. Please see the included patch.
|
H. Gregor Molter <cyberdeck> |
Depends on the following items: None found
Items that depend on this one: None found
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Follow 3 latest changes.
Date | Changed by | Updated Field | Previous Value | => | Replaced by |
---|---|---|---|---|---|
2021-11-13 | yarrick | Status | None | Works For Me | |
Open/Closed | Open | Closed | |||
2020-10-22 | cyberdeck | Attached File | - | Added ipv6.patch, #50049 |
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Corresponding source code
I managed to test this case now, and for me it worked.
ND6 joins the appropriate group:
https://git.savannah.nongnu.org/cgit/lwip.git/tree/src/core/ipv6/nd6.c#n2456
this is triggered by netif:
https://git.savannah.nongnu.org/cgit/lwip.git/tree/src/core/netif.c#n1464
Maybe you are missing the MLD6 flag on your netif?