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| author | Yu Watanabe <watanabe.yu+github@gmail.com> | 2018-10-17 02:32:26 +0900 |
|---|---|---|
| committer | Lennart Poettering <lennart@poettering.net> | 2018-10-18 09:43:04 +0200 |
| commit | 9fcdab9c8747ab092ac120b58de2ee7b1be9d7db (patch) | |
| tree | 09194125c0f34923eeae03966dbbe052a7a28364 | |
| parent | 103341f9f8ac58afbb57241b04cbf1b29abd5355 (diff) | |
| download | systemd-9fcdab9c8747ab092ac120b58de2ee7b1be9d7db.tar.gz | |
resolve: set IP_RECVERR
Closes #10345.
| -rw-r--r-- | src/resolve/resolved-dns-scope.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/resolve/resolved-dns-scope.c b/src/resolve/resolved-dns-scope.c index 57af95c41f..0c96332c75 100644 --- a/src/resolve/resolved-dns-scope.c +++ b/src/resolve/resolved-dns-scope.c @@ -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 { |