From a0166609f782da91710dea9183d1bf138538db37 Mon Sep 17 00:00:00 2001 From: Tom Gundersen Date: Wed, 24 Jun 2015 21:22:46 +0200 Subject: resolved: packet - ensure there is space for IP+UDP headers Currently we only make sure our links can handle the size of the payload witohut taking the headers into account. --- src/resolve/resolved-dns-scope.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'src/resolve/resolved-dns-scope.c') diff --git a/src/resolve/resolved-dns-scope.c b/src/resolve/resolved-dns-scope.c index 25392d21d7..e01e97be35 100644 --- a/src/resolve/resolved-dns-scope.c +++ b/src/resolve/resolved-dns-scope.c @@ -160,7 +160,7 @@ int dns_scope_emit(DnsScope *s, DnsPacket *p) { if (p->size > DNS_PACKET_UNICAST_SIZE_MAX) return -EMSGSIZE; - if (p->size > mtu) + if (p->size + UDP_PACKET_HEADER_SIZE > mtu) return -EMSGSIZE; if (family == AF_INET) -- cgit v1.2.3-54-g00ecf