mac@programming.dev to Programmer Humor@programming.dev · 8 个月前GoOnprogramming.devimagemessage-square104fedilinkarrow-up11.06Karrow-down148
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minus-squarep1mrx@sh.itjust.workslinkfedilinkarrow-up2·8 个月前 Because 1.2.3.4 and 1.02.003.04 both map to the same number. But 10.20.30.40 and 010.020.030.040 map to different numbers. It’s often best to reject IPv4 addresses with leading zeroes to avoid the decimal vs. octal ambiguity.
minus-squareDanny M@lemmy.escapebigtech.infolinkfedilinkarrow-up2·8 个月前I don’t know why anyone would write their IPs in octal, but fair point
minus-squarep1mrx@sh.itjust.workslinkfedilinkarrow-up2·8 个月前It’s not about how people write them, it’s how parsers parse them. IPv4 has been around since 1982, and most parsers interpret leading zeros as octal.
But 10.20.30.40 and 010.020.030.040 map to different numbers. It’s often best to reject IPv4 addresses with leading zeroes to avoid the decimal vs. octal ambiguity.
I don’t know why anyone would write their IPs in octal, but fair point
It’s not about how people write them, it’s how parsers parse them. IPv4 has been around since 1982, and most parsers interpret leading zeros as octal.