<html data-lt-installed="true"> <head> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> </head> <body> Hello List, after switching from radvd to systemd-networkd for router advertisements, I noticed my Android device losing IPv6 connection after a while and not displaying any IPv6 Addresses anymore in the network overview. I am aware with IPv6 issues on Android on certain vendors / ROMs, but after trying to troubleshoot it, I noticed systemd-networkd not sending periodic router advertisements into my network compared to radvd. In radvd, there's the MinRtrAdvInterval and MaxRtrAdvInterval config option, whileas for systemd-networkd I wasn't able to find any of these options. Trying to adjust timers for PreferredLifetimeSec, ValidLifetimeSec or RouterLifetimeSec I still wasn't able to get networkd to send out periodic RAs (either with the defaults or my own values). There will only be sent a router advertisement for client initiated router solicitations, like with the rdisc6 tool. I confirmed this with radvdump and tcpdump. As soon as I re-start radvd, IPv6 Adresses re-appear on my Android device. Multicast snooping has been disabled on all of my bridges. My sd-networkd .network config file for one bridge looks like this: [Match] Name=br0 [Network] Address=fe80::1/64 Address=2a0f:85c1:beef:2031::/64 IPv6AcceptRA=false IPv6SendRA=yes IPv6PrivacyExtensions=no [IPv6SendRA] RouterLifetimeSec = 60 EmitDNS = yes DNS = fd00:0:0:10::4 EmitDomains = no [IPv6Prefix] Prefix=2a0f:85c1:beef:2031::/64 PreferredLifetimeSec=60 ValidLifetimeSec=300 Did I miss an option for enabling periodic RAs or isn't there simply a way to achieve this?` Kind regards, Marcel MEnzel </body> <lt-container></lt-container> </html>