/usr/share/kamailio/db_berkeley/kamailio/dr_gateways is in kamailio-berkeley-modules 4.0.4-1ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 | METADATA_COLUMNS
gwid(int) type(int) address(str) strip(int) pri_prefix(str) attrs(str) description(str)
METADATA_KEY
METADATA_READONLY
0
METADATA_LOGFLAGS
0
METADATA_DEFAULTS
NIL|0|NIL|0|NULL|NULL|''
|