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| author | Donald Sharp <sharpd@cumulusnetworks.com> | 2020-01-04 13:42:22 +0100 |
|---|---|---|
| committer | Donald Sharp <sharpd@cumulusnetworks.com> | 2020-01-04 13:45:22 +0100 |
| commit | 951f8bcbba1104725d42ae7057e4774b59ac2cfc (patch) | |
| tree | fdb92ad15bd7f78dbb123899db8764aea2bf85d3 | |
| parent | Merge pull request #5613 from srimohans/ietf (diff) | |
| download | frr-951f8bcbba1104725d42ae7057e4774b59ac2cfc.tar.xz frr-951f8bcbba1104725d42ae7057e4774b59ac2cfc.zip | |
zebra: Ignore RTM_GETNEIGH messages from the linux kernel
The linux kernel will occassionally send RTM_GETNEIGH when
it expects user space to help in resolution of an ARP entry.
See linux kernel commit:
commit 3e25c65ed085b361cc91a8f02e028f1158c9f255
Author: Tim Gardner <tim.gardner@canonical.com>
Date: Thu Aug 29 06:38:47 2013 -0600
net: neighbour: Remove CONFIG_ARPD
Since we don't care about this, let's just safely ignore this
message for the moment. I imagine in the future we might
care when we implement neighbor managment in the system.
Reported By: Stefan Priebe <s.priebe@profihost.ag>
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
| -rw-r--r-- | zebra/kernel_netlink.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/zebra/kernel_netlink.c b/zebra/kernel_netlink.c index 23f1a3bf8..ed749089a 100644 --- a/zebra/kernel_netlink.c +++ b/zebra/kernel_netlink.c @@ -290,6 +290,18 @@ static int netlink_information_fetch(struct nlmsghdr *h, ns_id_t ns_id, return netlink_neigh_change(h, ns_id); case RTM_DELNEIGH: return netlink_neigh_change(h, ns_id); + case RTM_GETNEIGH: + /* + * Kernel in some situations when it expects + * user space to resolve arp entries, we will + * receive this notification. As we don't + * need this notification and as that + * we don't want to spam the log file with + * below messages, just ignore. + */ + if (IS_ZEBRA_DEBUG_KERNEL) + zlog_debug("Received RTM_GETNEIGH, ignoring"); + break; case RTM_NEWRULE: return netlink_rule_change(h, ns_id, startup); case RTM_DELRULE: |