Is there a way to disable Path MTU discovery on per socket basis on OS X?
This is how to set don't fragment bit on socket on Linux
But IP_MTU_DISCOVER is not recognized on OS X.
Only recognized options as per netinet/in.h on OS X are:
/*
* Options for use with [gs]etsockopt at the IP level.
* First word of comment is data type; bool is stored in int.
*/
#define IP_OPTIONS 1 /* buf/ip_opts; set/get IP options */
#define IP_HDRINCL 2 /* int; header is included with data */
.....