This bug was fixed in the package iproute2 - 4.18.0-1ubuntu3
--------------- iproute2 (4.18.0-1ubuntu3) eoan; urgency=medium
* d/p/ss-review-ssfilter.patch: fixed issue with ss and ssfilter where ssfilter rejects single expressions if enclosed in braces (LP: #1831775)
-- Rafael David Tinoco <email address hidden> Wed, 05 Jun 2019 21:26:00 -0300
This bug was fixed in the package iproute2 - 4.18.0-1ubuntu3
---------------
iproute2 (4.18.0-1ubuntu3) eoan; urgency=medium
* d/p/ss- review- ssfilter. patch: fixed issue with ss and ssfilter
where ssfilter rejects single expressions if enclosed in
braces (LP: #1831775)
-- Rafael David Tinoco <email address hidden> Wed, 05 Jun 2019 21:26:00 -0300