On 10/7/2011 11:54 AM, Ryan Stone wrote: > Currently when FreeBSD responds to a ICMP Echo Request, it takes the > original mbuf, rewrites a couple of fields (like the src/dst IP and > the ICMP type), and then sends that mbuf back. As things are > currently implemented, the Don't Fragment bit is kept in the ICMP > replay. This can cause problems for large ICMP Echo Requests if the > MTU on the return route is less than the MTU on the incoming route and > the DF bit is set(Linux's ping command sets it by default).
Not sure, but would this not be a "good thing" in some cases ? Having ping behave in this manner would help you discover such PMTU issues no ? ---Mike -- ------------------- Mike Tancsa, tel +1 519 651 3400 Sentex Communications, m...@sentex.net Providing Internet services since 1994 www.sentex.net Cambridge, Ontario Canada http://www.tancsa.com/ _______________________________________________ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "freebsd-net-unsubscr...@freebsd.org"