IP_MTUDISC (reference) in projects: netbsd

185 #define   IP_MTUDISC                    0x0400              /* Path MTU Discovery; set DF */  macro

1586                               (tp->t_mtudisc ? IP_MTUDISC : 0) |  in tcp_output()

611           if ((flags & IP_MTUDISC) != 0 && rtmtu_nolock) {  in ip_output()

/netbsd/src/sys/netinet/
D	ip_var.h	`185 #define IP_MTUDISC 0x0400 /* Path MTU Discovery; set DF */ macro`
D	tcp_syncache.c	`1339 (ip_mtudisc ? IP_MTUDISC : 0), in syn_cache_respond()`
D	tcp_output.c	`1586 (tp->t_mtudisc ? IP_MTUDISC : 0) \| in tcp_output()`
D	tcp_subr.c	`855 (tp && tp->t_mtudisc ? IP_MTUDISC : 0), NULL, in tcp_respond()`
D	ip_output.c	`611 if ((flags & IP_MTUDISC) != 0 && rtmtu_nolock) { in ip_output()`