in.h: new IP_MTU_DISCOVER mode IP_PMTUDISC_INTERFACE

introduced in linux v3.13, 482fc6094afad572a4ea1fd722e7b11ca72022a0 to mitigate dns cache poisoning via fragmentation
12 years ago · d82db8550a
1 changed files with 1 additions and 0 deletions
--- a/include/netinet/in.h
+++ b/include/netinet/in.h
@ -217,6 +217,7 @@ uint16_t ntohs(uint16_t);
 #define IP_PMTUDISC_WANT   1
 #define IP_PMTUDISC_DO     2
 #define IP_PMTUDISC_PROBE  3
+#define IP_PMTUDISC_INTERFACE 4

 #define IP_DEFAULT_MULTICAST_TTL        1
 #define IP_DEFAULT_MULTICAST_LOOP       1