Support for DHCP Option 121 and 249 on Mac OS X?

Question

DHCP

Tell me, is there support for options 121 and 249 (Classless Static Route) in DHCP and PPTP clients of Mac OS X?
There is information on the Internet about the support of these options, but my clients with OS X refuse to accept routes from them, although the rest of the parameters apply and there are no problems with Windows.

Answer 1

The problem turned out to be in the vpn server configuration, ip unnamed was used for the Virtual-Template, and the first address from the pool for vpn clients was specified in the routes distributed through option 249, on which no one was sitting.
On Windows, this configuration works (setting the destination route to the ppp interface), but OS X refuses to accept invalid routes.

Answer 2

DHCP Inform itself is supported, here is a snippet from man ipconfig :

ipconfig set interface-name (MANUAL | INFORM) ip-address subnet-mask
The INFORM service configures the IP address statically like MANUAL, but then broadcasts
DHCP INFORM packets to retrieve DHCP option information. If the DHCP server responds and
supplies a subnet mask, that subnet mask is used instead of the specified subnet-mask.

Those. for test purposes, you can try to send it manually.
But in fact, when connecting to a PPTP server, everything is sent, here is a screenshot of Wireshark:

Now there is no time to fence the config from lissary, but in the evening or tomorrow I will raise a stand with a cisco - I will check the support for specific options, but IMHO they should be supported :)