Oct 29, 2018 The second way to specify an address range for IPV6 is to use Classless Inter-Domain Routing (CIDR) notation to specify a block of addresses. For example: range6 2001:DB8::0/120 The server will convert the ranges into a set of internal structures that each are a single CIDR block and then link them together to form the range.
Problem:How do I specify an address range for IPv6? Answer:The instruction range6 provides two ways to define a block of addresses that the server can use for allocations. While either method will work, the server will allocate addresses more efficiently if they are configured in CIDR blocks. First MethodOne way to specify an address range for IPv6 is to provide the beginning and ending addresses of the block: range6 2001:DB8::64 2001:DB8::C8# This is the address range 100-200 in decimalSecond MethodThe second way to specify an address range for IPV6 is to use Classless Inter-Domain Routing (CIDR) notation to specify a block of addresses.
TechSNAP Fans share your brains out!Want to submit to the show's Hall of Shame? Put Hall of Shame in your title, and if it gets enough votes it'll be added to the official TechSNAP Shame list in that week's episode.If your post doesn't show up in the new que because your post is caught in the filter, message the moderators right away and they will fix it for you.:.YouPorn.com.Microsoft.Sony.Stratfor.Government of Norway.Cryptic Studios.Alabama State Department of Education.Match.com.Barracuda Networks.Adobe.Enigmail.Comcast. This will be kind of a long post, but I want to give complete information.I have a home/business LAN with isc-dhcp-server running an ipv4 dhcp server and bind as a DNS server running on an ubuntu server box. I have comcast business, and the gateway has all dhcp functions disabled. It is issuing addresses:I'm not sure how to tell which is the DHCP server though from Android; on ipv4 it's 192.168.1.22. I can identify all the MAC addresses as devices I know, except 3:. 61:AD:F8:15:56:CC.
16:0A:EB:A3:10:A4. 61:AD:F8:51:15:25No idea what those 3 are; I did an ipv4 scan of the entire LAN and no corresponding ipv4 devices show up. No MAC lookup gives me a result as to who the manufacturer might be.My DHCP server issues addresses based on the MAC; so I know every mac on the LAN.
Guests (aka unknown MAC) get a 192.168.1.197-254 addresses, so they'd be easy to identify. The addresses you're seeing are and are mandatory under IPv6, so i suspect the only way to get rid of them is to manually disable IPv6 on each device. They don't rely on any kind of server to hand them out, with each device choosing their own address and announcing it to other hosts on the network.Maybe something in would help pinpoint what's going wrong?Ultimately you might find implementing proper IPv6 support on your network to be the easiest solution, but Android (due to one engineer at Google who ), so you'll need to use SLAAC too. I have been working this for like a year and have never seen that bug report, but that's a good lead. This here:The bugreport in #2 is an unexpected configuration. It looks like the network is sending a Router Advertisement that configures IPv6 DNS servers, but not IPv6 addresses.Caused me to look into my bind config, but I saw all ipv6 disabled.I need to learn more to set up ipv6, but I know it needs to be done. I had a 2nd baby on 7/5, so my free time doesn't exist, but it's on my roadmap.
That address probably isn't coming from DHCPv6, it's probably coming from SLAAC.If you do ip -6 r you can get the address of the default router (which will be what's sending the RAs that you're configuring from), and then you can get its MAC address from ip -6 n. That should tell you which device is sending them, at least. You can dump the RAs themselves with rdisc6 or radvdump if you have them.I don't see why that would stop you from resolving hostnames though. But if that's due to some misconfiguration in your network, then you should fix the misconfiguration, not rage disable v6 everywhere.
I've never even heard of SLAAC, I'll research it.Here's the result of the command: surfrock66@sr66-hp2:$ sudo ip -6 r2601:204:cd00:e200::/64 dev wlo1 proto ra metric 600 pref mediumfe80::/64 dev wlo1 proto kernel metric 256 pref mediumdefault via fe80::226:f3ff:fe34:cd6 dev wlo1 proto static metric 600 pref mediumsurfrock66@sr66-hp2:$ rdisc6 -m rdisc6 wlo1rdisc6: Temporary failure in name resolutionI don't want to disable v6 everywhere, I've just been doing it out of survival since I've been too busy to really deep dive into it. I took an AIX job 18 months ago and have focused all my learning on that; additionally my 2nd child was born this past Tuesday (7/5/2016) so my study time is gonna go down even more!
I do think tying the Android issue to ipv6 though is gonna push this up the priority list.