Thursday, September 3, 2020

Solution: Closing connection because of an I/O error in FRR - at least in Ubuntu

 If you are getting this message in FRR:

Closing connection because of an I/O error in FR


The solution is straight forward. You have to compile FRR with this flag:

--enable-systemd


So, it would be something like:

./configure \

    --prefix=/usr \

    --includedir=\${prefix}/include \

    --enable-exampledir=\${prefix}/share/doc/frr/examples \

    --bindir=\${prefix}/bin \

    --sbindir=\${prefix}/lib/frr \

    --libdir=\${prefix}/lib/frr \

    --libexecdir=\${prefix}/lib/frr \

    --localstatedir=/var/run/frr \

    --sysconfdir=/etc/frr \

    --with-moduledir=\${prefix}/lib/frr/modules \

    --with-libyang-pluginsdir=\${prefix}/lib/frr/libyang_plugins \

    --enable-configfile-mask=0640 \

    --enable-logfile-mask=0640 \

    --enable-snmp=agentx \

    --enable-multipath=64 \

    --enable-user=frr \

    --enable-group=frr \

    --enable-vty-group=frrvty \

    --with-pkg-git-version \

    --enable-systemd

    --with-pkg-extra-version=-MyOwnFRRVersion



you can follow those instructions and adding my previous solution:

http://docs.frrouting.org/projects/dev-guide/en/latest/building-frr-for-ubuntu2004.html

Tuesday, September 1, 2020

Tiny script: how to get the RRSIG DNS records with python3

 (I guess there are many other ways to do this, even more elegant)


import dns.resolver
domain='lacnic.net'
domain = dns.name.from_text(domain)
request = dns.message.make_query(domain, dns.rdatatype.ANY)
response = dns.query.tcp(request,'8.8.8.8')
#print(response)

for item in str(response).splitlines( ):
  if 'RRSIG' in item: print (item)