In zebra/rt_netlink.c, we call vrf_lookup_by_id() when we get a route to find the associated vrf object for that table.

This should be improved to be a hash table mapping of Table ID to zebra_vrf object.

You would need to create a hash table probably in zebra/zebra_vrf.h that uses the table_id hash as a key and then update the code in vrf_lookup_by_id() to use this.

This shoul

Hello, lately I can't successfully vdirsyncer sync my calendars because of a
database is locked error. Synchronization works fine with android's davdroid which talks with the same server.

Your vdirsyncer version: 0.16.4
If applicable, which server software (and which version) you're using: Nextcloud 13
Your Python version: 3.6.4
Your operating system: Arch linux
Relevant debug outpu