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Description of problem:
Dracut DHCP is still failing to recognise rfc3442-classless-static-routes option. Occurs only when DHCP booting on network offering only classless static routes.
This issue was previously described in Bug #1260955 but it looks that the customer still hits the mentioned bug.

Version-Release number of selected component (if applicable):
RHEL-7.3 installer (rhel-server-7.3-x86_64-dvd.iso)

How reproducible:
The steps to reproduce the bug are to boot into the initramfs image included in the rhel-server-7.3-x86_64-dvd.iso in a DHCP environment with option rfc3442-classless-static-routes.

Actual results:
When the system boots, only the route to the local gateway is present (all rfc3442-classless-static-routes (DHCP option 121) are being ignored.

Expected results:
rfc3442-classless-static-routes (DHCP option 121) are available when the system boots.

https://bugzilla.redhat.com/show_bug.cgi?id=1045087

Created attachment 1310497 [details]
Customer's network routes

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2018:3232