Category: IPv4
iperf3 and Chelsio T6225-CR
I ran four tests yesterday using iperf3. The T6225-CR NIC still runs with Chelsio’s SM10G-SR optics. It’s amazing that receiving TCP streams runs at full speed. Sending TCP streams limps away only at a few megabits per second. This wasn’t expected at all. Even IPv6 runs faster than IPv4 for these particular tests. The Cisco […]
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AFRINIC with only two years to go
According to Geoff Huston‘s automated predictions, today is the day where AFRINIC has only two years left before they run out of IPv4 addresses. As time progresses, AFRINIC might hit their Z day sooner. AFRINIC has a webpage of their own on the IPv4 exhaustion within AFRINIC.
Read More → AFRINIC with only two years to goNetCom 4G and Huawei B593s-22
Sometime ago I switched from a Huawei E220 to a Huawei B593s-22. My 3G internet connection became a 4G internet connection in an instant. I recently turned on IPv6 on the 4G WAN interface, only to be really disappointed. NetCom does not offer IPv6 service to its 4G customers. That’s a shame. With ARIN running […]
Read More → NetCom 4G and Huawei B593s-22ARIN’s Z day
ARIN announced today the depletion of its IPv4 resources from their free pool. Only AfriNIC remains before all public IPv4 addresses are depleted. IPv6, anyone?
Read More → ARIN’s Z dayARIN close to Z day
ARIN, the American Registry for Internet Numbers, is closing in on their Z day. Soon only AfriNIC will have IPv4 address blocks available for their customers, and even AfriNIC will run out of IPv4 addresses sometime in the year 2019. See ARIN’s IPv4 depletion webpage for more information. The bottom line is: Start using IPv6!
Read More → ARIN close to Z dayReplicating an entire FreeBSD system using ZFS
I had a FreeBSD setup I wanted to replicate to another, identical computer. The source system runs ZFS and so should the receiving system. A recursive snapshot in combination with the zfs send and zfs receive commands proved most fruitful.
Read More → Replicating an entire FreeBSD system using ZFSFreeBSD and IPv6 only – February 2014
I tried FreeBSD base/head with only an IPv6 address configured on the NIC. While installing some ports, I soon ran into the problem of living in more or less total isolation.
Read More → FreeBSD and IPv6 only – February 2014CARP on FreeBSD 10.0-CURRENT
I’ve been experimenting with carp(4) on FreeBSD/i386 10.0-CURRENT and FreeBSD/amd64 10.0-CURRENT for the past year or so. carp(4) is no longer a pseudo-interface, but rather accessible on every conceivable interface.
Read More → CARP on FreeBSD 10.0-CURRENTHow many IPv4 addresses are there?
An acquaintant posted the following question on an IRC channel earlier today: How many IPv4 addresses are there? The quick and simple answer is 232 = 4,294,967,296 addresses. Is this an accurate answer? Yes, in a strict interpretation of the original question. A far more interesting puzzle is if you want to account for all the IPv4 […]
Read More → How many IPv4 addresses are there?Persisting IPv6 DNS resolver addresses
Here’s a conundrum aimed at those dabbling in the internals of Microsoft Windows 7.
Read More → Persisting IPv6 DNS resolver addresses