tree cd910883c9bae6fb067a5182079e151e87e5e8bd
parent ee13d71e6b017cfb50057e3e1815f7d700a03548
author Lance Niles <lniles@google.com> 1628528951 -0600
committer Lance Niles <lniles@google.com> 1628528951 -0600

Only report multicast failures of none of the local interfaces send successfully.

On iOS, `sendmsg` succeeds on only one of the local interfaces when multicasting to an IPv6 address, the others fail with `EINVAL`. This **does not** address the root cause but just ignores the error if any one of the `sendmsg` calls succeed.