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Sep
30
comment How can I find out the next IPv6 address?
Off by one error ;) 4294967296 (2^32) is the number of possible addresses in a /96; however the actual range is 0 - (2^32 - 1)
Sep
30
comment How can I find out the next IPv6 address?
As an aside - a /96 gives you as many addresses to play with as the entire IPv4 address space. You probably don't have to worry about efficient usage of the space - A VPS probably isn't going to need all of those addresses just for itself...
Sep
30
comment How can I find out the next IPv6 address?
Makes sense. Does the rest of my answer address your question?
Sep
30
answered How can I find out the next IPv6 address?
Jul
6
comment What is the Maximum MTU supported in DSL Standards
I'm not sure how much experience you have of dealing with incumbent telcos but my past experience tends to say that if you ask them this sort of question then you will be lucky to get any answer at all ;) To be honest I agree with you, the 1500 limit is likely to be entirely arbitrary choice made by the carrier. The main reason I asked the question though was to understand if there are any protocol limits or equipment limits rather than arbitrary design choices.
Jul
6
comment What is the Maximum MTU supported in DSL Standards
Pretty much any incumbent telecoms company will do this, e.g. British Telecom, Deutsche Telecom, France Telecom. The delivery mechanism varies and can include direct connection to an end-to-end ATM PVC, or a dedicated IP port delivering PPP over L2TP (often over ethernet with an MTU in the 2k-9k range).
Jul
6
revised What is the Maximum MTU supported in DSL Standards
edited tags
Jul
6
comment What is the Maximum MTU supported in DSL Standards
I know that sending packets of more than 1500 bytes across the public internet is uncommon; however I use a lot of DSL lines in VPN deployments which go nowhere near the public internet and am curious as to why the MTU is still restricted in this situation.
Jul
6
asked What is the Maximum MTU supported in DSL Standards
May
30
awarded  Yearling
Apr
1
comment Are there any statistics on the number of networks using Ethernet Jumbo frames?
A lot of people have posted comments on situation where they use Jumbos locally but not on the WAN. Can anyone comment on this: Would you consider a WAN ethernet link to be broken if it only allowed for a 1500 byte MTU? It seems the consensus so far is no.
Feb
25
asked Are there any statistics on the number of networks using Ethernet Jumbo frames?
Dec
10
accepted How well does Windows 7 Handle High Bandwidth-Delay Product Networks
Dec
8
comment Why am I getting long TCP connect latency on connect in a LAN (over a cross!)?
The problem with comparing time deltas is that it's impossible to tell whether there is a big delay in one direction, or whether there is a smaller delay in both directions :(
Dec
8
answered Why am I getting long TCP connect latency on connect in a LAN (over a cross!)?
Dec
7
answered Local DNS doesn't work over Wireless
Dec
7
comment DNS using CNAMEs breaks MX records?
This is a common question and has been asked many times before. See this link for an example: serverfault.com/questions/18000/…
Dec
7
revised Why does psql attempt to connect with a different username when run from a Perl script
added 158 characters in body
Dec
7
comment Why does psql attempt to connect with a different username when run from a Perl script
Do you have anything set in the PG* environment variables or a ~/.psqlrc file? Are there any map entries in the pg_ident.conf file?
Dec
7
answered Why does psql attempt to connect with a different username when run from a Perl script