diff options
Diffstat (limited to 'src/resolve/resolved-dns-packet.h')
| -rw-r--r-- | src/resolve/resolved-dns-packet.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/resolve/resolved-dns-packet.h b/src/resolve/resolved-dns-packet.h index 99f60a1556..de3a789a78 100644 --- a/src/resolve/resolved-dns-packet.h +++ b/src/resolve/resolved-dns-packet.h @@ -44,8 +44,12 @@ struct DnsPacketHeader { /* The various DNS protocols deviate in how large a packet can grow, but the TCP transport has a 16bit size field, hence that appears to - be the maximum. */ + be the absolute maximum. */ #define DNS_PACKET_SIZE_MAX 0xFFFF + +/* RFC 1035 say 512 is the maximum, for classic unicast DNS */ +#define DNS_PACKET_UNICAST_SIZE_MAX 512 + #define DNS_PACKET_SIZE_START 512 struct DnsPacket { |