regex needed

From: Chris Knipe (savage_at_savage.za.org)
Date: 01/18/05 

To: <beginners@perl.org>
Date: Tue, 18 Jan 2005 15:31:50 +0200

Lo everyone,

Can someone please give me a regex to parse the following...

Flags: X - disabled, I - invalid, D - dynamic, J - rejected,
C - connect, S - static, r - rip, o - ospf, b - bgp
 # DST-ADDRESS G GATEWAY DISTANCE INTERFACE
 0 S 0.0.0.0/0 r 198.19.0.2 1 SERVER-CORE
 1 S 196.0.0.0/8 r 165.146.192.1 1 National Gateway
 2 DC 198.19.1.0/24 r 0.0.0.0 0 WIRELESS-CORE
 3 Ib 198.19.0.0/24 u 0.0.0.0 200 (unknown)
 4 DC 198.19.0.0/24 r 0.0.0.0 0 SERVER-CORE
 5 DC 192.168.1.0/24 r 0.0.0.0 0 INTERNAL-CORE
 6 DC 165.146.192.1/32 r 0.0.0.0 0 National Gateway
[admin@wsmd-core] >

I want the regex to return the rule number for all route entries that is static (S Flag) on Interface "National Gateway". For added security, I'd like it if the regex will also only return true if the gateway address is part of 165.165.0.0/8 or 165.146.0.0/8

Basically, I need to use the rule number in another command to delete the route entry... So I presume I'll need to extract it via the regex

Hope someone can help me here.. 

--
Chris.

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