Date: Thu, 07 Nov 2019 21:44:40 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 241792] dhclient default route not working when given a /32 netmask Message-ID: <bug-241792-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D241792 Bug ID: 241792 Summary: dhclient default route not working when given a /32 netmask Product: Base System Version: 12.1-RELEASE Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: bin Assignee: bugs@FreeBSD.org Reporter: sigsys@gmail.com There's a certain VM where autoconfiguration via DHCP works with Linux but = not FreeBSD. I have no information on how this VM is setup apart that it's hos= ted with KVM/QEMU. The DHCP server sends a lease with a /32 netmask. This makes adding the default route fail since it is not reachable via any interface. Linux's dhclient-script seem to usually have a special case for that and explicitly adds an interface route to the router's address. FreeBSD's dhclient-script has a special case for when the router address is= the same as the leased address, but not when it's a different address that does= n't fall in the interface's subnet. With this change, DHCP just works on this VM: Index: sbin/dhclient/dhclient-script =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D --- sbin/dhclient/dhclient-script (revision 354408) +++ sbin/dhclient/dhclient-script (working copy) @@ -173,6 +173,9 @@ if [ "$new_ip_address" =3D "$router" ]; then route add default -iface $router >/dev/null 2>&1 else + if [ "$new_subnet_mask" =3D "255.255.255.25= 5" ]; then + route add "$router" -iface "$interf= ace" >/dev/null 2>&1 + fi route add default $router >/dev/null 2>&1 fi fi --=20 You are receiving this mail because: You are the assignee for the bug.=
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