tree e75ce2fd6c8aae1ebb9fe98f5ed75092d7073cfe
parent 1e0c88e184f2c58eb729973f300283edfa2c6be9
author awlane <awlane@memphis.edu> 1696626132 -0500
committer Davide Pesavento <davidepesa@gmail.com> 1696798326 -0400

face: handle PcapHelper::Error when applying multicast configuration

When the network interface state is changed, NFD reconfigures its
multicast ethernet faces. The code responsible for this is prone to
a TOCTOU race condition, e.g., if an interface is quickly brought up
and then down again. This currently raises an uncaught exception when
we try to set a packet filter for that interface.

Prevent this issue by catching PcapHelper errors in the same manner
as we catch EthernetTransport errors, and skip creating the face.

Refs: #5297
Change-Id: I9f91ac7c42dec06de34128cb34d6de8bb57e8cf5