I upgraded to R80.40 T102 and now /var/log/messages is flooded with following messages:
Apr 25 06:43:37 2021 fw-ext kernel: dst_release: dst:ffff8801dde8ad80 refcnt:-266138
Apr 25 06:43:43 2021 fw-ext kernel: net_ratelimit: 296 callbacks suppressed
Apr 25 06:43:43 2021 fw-ext kernel: dst_release: dst:ffff8801e43635c0 refcnt:-428436
Apr 25 06:43:43 2021 fw-ext kernel: dst_release: dst:ffff8801e43635c0 refcnt:-428437
Apr 25 06:43:43 2021 fw-ext kernel: dst_release: dst:ffff8801e43635c0 refcnt:-428437
Apr 25 06:43:43 2021 fw-ext kernel: dst_release: dst:ffff8801dde8ad80 refcnt:-266220
Apr 25 06:43:43 2021 fw-ext kernel: dst_release: dst:ffff8801e43635c0 refcnt:-428437
Apr 25 06:43:43 2021 fw-ext kernel: dst_release: dst:ffff8801dde8ad80 refcnt:-266220
Apr 25 06:43:43 2021 fw-ext kernel: dst_release: dst:ffff8801e43635c0 refcnt:-428438
Apr 25 06:43:43 2021 fw-ext kernel: dst_release: dst:ffff8801dde8ad80 refcnt:-266221
Apr 25 06:43:43 2021 fw-ext kernel: dst_release: dst:ffff8801e43635c0 refcnt:-428439
Apr 25 06:43:43 2021 fw-ext kernel: dst_release: dst:ffff8801dde8ad80 refcnt:-266222
Apr 25 06:43:48 2021 fw-ext kernel: net_ratelimit: 170 callbacks suppressed
Apr 25 06:43:48 2021 fw-ext kernel: dst_release: dst:ffff8801dde8ad80 refcnt:-266263
Apr 25 06:43:48 2021 fw-ext kernel: dst_release: dst:ffff8801dde8ad80 refcnt:-266264
Apr 25 06:43:48 2021 fw-ext kernel: dst_release: dst:ffff8801e43635c0 refcnt:-428480
Apr 25 06:43:48 2021 fw-ext kernel: dst_release: dst:ffff8801e43635c0 refcnt:-428480
Apr 25 06:43:48 2021 fw-ext kernel: dst_release: dst:ffff8801e43635c0 refcnt:-428481
Apr 25 06:43:48 2021 fw-ext kernel: dst_release: dst:ffff8801e43635c0 refcnt:-428482
Apr 25 06:43:48 2021 fw-ext kernel: dst_release: dst:ffff8801e43635c0 refcnt:-428482
Apr 25 06:43:48 2021 fw-ext kernel: dst_release: dst:ffff8801e43635c0 refcnt:-428483
Any idea what is causing this ? Firewall seems to work fine so far.