Miroslav Lichvar e49aececce socket: don't set interface for sent packets ...

With asymmetric routing (e.g. with BGP) it may not be possible to
respond to a request using the same interface. In such case, setting the
interface index in IP*_PKTINFO* causes the packet to be silently dropped
by the kernel.

Until we can predict if sending with the specified interface will
succeed, or provide only a hint, don't set the interface and leave it
to the kernel to select an interface.

This reverts commit 5fc7674e36 ("ntp: set interface index in
IP*_PKTINFO when responding").

Reported-by: Arkadiusz Miśkiewicz <arekm@maven.pl>

2020-05-14 15:37:38 +02:00

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