Hi, This bug is still there:
DKMS make.log for wireguard-1.0.20200520 for kernel 4.19.0-8-amd64 (x86_64) Thu 11 Jun 2020 08:42:36 AM CEST make: Entering directory '/usr/src/linux-headers-4.19.0-8-amd64' CC [M] /var/lib/dkms/wireguard/1.0.20200520/build/main.o CC [M] /var/lib/dkms/wireguard/1.0.20200520/build/noise.o CC [M] /var/lib/dkms/wireguard/1.0.20200520/build/device.o CC [M] /var/lib/dkms/wireguard/1.0.20200520/build/peer.o CC [M] /var/lib/dkms/wireguard/1.0.20200520/build/timers.o CC [M] /var/lib/dkms/wireguard/1.0.20200520/build/queueing.o CC [M] /var/lib/dkms/wireguard/1.0.20200520/build/send.o CC [M] /var/lib/dkms/wireguard/1.0.20200520/build/receive.o CC [M] /var/lib/dkms/wireguard/1.0.20200520/build/socket.o CC [M] /var/lib/dkms/wireguard/1.0.20200520/build/peerlookup.o /var/lib/dkms/wireguard/1.0.20200520/build/socket.c: In function ‘send6’: /var/lib/dkms/wireguard/1.0.20200520/build/socket.c:139:20: error: ‘const struct ipv6_stub’ has no member named ‘ipv6_dst_lookup_flow’; did you mean ‘ipv6_dst_lookup’? dst = ipv6_stub->ipv6_dst_lookup_flow(sock_net(sock), sock, &fl, ^~~~~~~~~~~~~~~~~~~~ ipv6_dst_lookup make[3]: *** [/usr/src/linux-headers-4.19.0-8-common/scripts/Makefile.build:308: /var/lib/dkms/wireguard/1.0.20200520/build/socket.o] Error 1 make[3]: *** Waiting for unfinished jobs.... make[2]: *** [/usr/src/linux-headers-4.19.0-8-common/Makefile:1537: _module_/var/lib/dkms/wireguard/1.0.20200520/build] Error 2 make[1]: *** [Makefile:146: sub-make] Error 2 make: *** [Makefile:8: all] Error 2 make: Leaving directory '/usr/src/linux-headers-4.19.0-8-amd64' # cat /etc/debian_version 10.4 # uname -r 4.19.0-8-amd64 Packages: ii wireguard 1.0.20200513-1~bpo10+1 all fast, modern, secure kernel VPN tunnel (metapackage) iF wireguard-dkms 1.0.20200520-1~bpo10+1 all fast, modern, secure kernel VPN tunnel (DKMS version) ii wireguard-tools 1.0.20200513-1~bpo10+1 amd64 fast, modern, secure kernel VPN tunnel (userland utilities) This is IMHO a serious problem, even because in buster repositories there is *no* alternative, older version available, Thanks, Stefano -- Stefano David, PhD