On Fri, Dec 9, 2022 at 5:09 PM John Lemonovich <john.lemonov...@foresys.com> wrote: > Hello Denys, > > I am working on an embedded Linux project using an intel Arria 10 FPGA and > have been using IPv4 for a long time, and now need IPv6. I found your email > online searching for help. I have many things working with IPv6, but the one > thing I can’t get to work is udhcpc6 – it will not acquire an IP address via > DHCPv6 (tried with multiple servers). I’m really stuck and looking for any > help – even a pointer to documentation maybe I’m missing?
Sorry, I myself have no DHPCv6 server to test against... > If I look at the tcpdump output – the solicit packets go out with a null > source address (all 0’s - just as :: ) Which kind of makes sense, if you think about it. DHCP client does not _have_ an IP address yet, this is the whole point of DHCP: to obtain an address... > and the server doesn’t know how to reply (unreachable). I would imagine server can/should reply with a broadcast, right? > My link local address is set to: > inet6 fe80::da80:39ff:fed8:90a0 prefixlen 64 scopeid 0x20<link> > but yet udhcpc6 seems to put just :: in for the source address. But what if the iface has no link-local address either? Then udhcpc6 would have no choice but leave it not filled. And a good server implementation should deal with such incoming packets. > If there’s a better place to post this - please let me know. CCed to busybox ML. _______________________________________________ busybox mailing list busybox@busybox.net http://lists.busybox.net/mailman/listinfo/busybox
