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resolve: set IP_RECVERR

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Closes #10345.
This commit is contained in:
Yu Watanabe 2018-10-17 02:32:26 +09:00 committed by Lennart Poettering
parent 103341f9f8
commit 9fcdab9c87
1 changed files with 7 additions and 0 deletions
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7
src/resolve/resolved-dns-scope.c
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@ -411,6 +411,13 @@ static int dns_scope_socket(
}
}
if (type == SOCK_DGRAM) {
/* Set IP_RECVERR or IPV6_RECVERR to get ICMP error feedback. See discussion in #10345. */
r = setsockopt(fd, SOL_IP, sa.sa.sa_family == AF_INET ? IP_RECVERR : IPV6_RECVERR, &const_int_one, sizeof(const_int_one));
if (r < 0)
return -errno;
}
if (ret_socket_address)
*ret_socket_address = sa;
else {