Generating IPv6 list with filtergen.level3.net

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1

Anyone out there know how to generate a IPv6 list Level3's filtergen? I tried Google but didn't find anything.

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2

Hi Courtney -

Try something like:

whois -h filtergen.level3.net "AS3356 -cp -v6"
  or
whois -h filtergen.level3.net "AS3356 -cp -v4v6"

Using AS7922 or something of that nature (currently I dont see any v6 routes registered under 7922.)

   -Kevin

3

Thanks!!!

~$ whois -h filtergen.level3.net "RADB::AS7922 -v6"
Prefix list for policy RADB::AS7922 =
RADB::AS7922

2001:558::/29
2001:558::/31
2601::/28
~$

Courtney Smith
Network Engineer
Comcast, National Engineering & Technical Operations
NOC:888.662.6386x2x2
http://as7922.peeringdb.com

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4

Digging up a (very) old thread here, apologies.

Does anyone know if filtergen is going to support IPv6-length subnet masks?
Trying to use -le=128 returns an error. I can work around with sed, but just
curious if this tool is still being developed. Emails to rr@level3.net
return a bounce directing one to their customer portal.

Also curious if the tool now supports IOS-XR RPL

5

> whois -h filtergen.level3.net "AS3356 -cp -v4v6"

Digging up a (very) old thread here, apologies.

Does anyone know if filtergen is going to support IPv6-length subnet
masks? Trying to use -le=128 returns an error. I can work around with
sed, but just curious if this tool is still being developed.

May I recommend a different approach instead?

Download and compile bgpq3:

    git clone GitHub - snar/bgpq3: bgpq3 && cd bgpq3 && ./configure && make

Run bgpq3:

    Vurt:~ job$ bgpq3 -6 -A -R 128 -l AS15562pfx AS15562
    no ipv6 prefix-list AS15562pfx
    ipv6 prefix-list AS15562pfx permit 2001:67c:208c::/48 le 128
    ipv6 prefix-list AS15562pfx permit 2001:67c:2980::/48 le 128
    ipv6 prefix-list AS15562pfx permit 2001:728:1808::/48 le 128

Also curious if the tool now supports IOS-XR RPL

bgpq3 supports BIRD, IOS, XR, JunOS & JSON output. See bgpq3 -h for all
options

Kind regards,

Job