[PATCH] libbb: send_to_from with mixed ip/ipv6 addresses

[Imu Li]

When a server is recieves a datagram to an IPv4 address by an IPv6
socket, the destination address is supplied as an in_pktinfo, not an
in6_pktinfo. This allows that to be supplied as a source address in a
reply.

This fixes a bug in ntpd, where if the system has multiple addresses,
queries to secondary addresses have the wrong source address in their
response.
---
 libbb/udp_io.c | 4 ++++
 1 file changed, 4 insertions(+)

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