geoip.ubuntu.com doesn't support non-ASCII characters leading to malformed XML

[Jimmy]

(I hope this is the right place to report this bug.)

When going to http://geoip.ubuntu.com/lookup from a city containing non-ASCII characters it will output malformed XML.
The non-ACSII are convered to "�", according to curl, and unicode \uffff, according to Firefox. In my example the character "ö" in my city name was converted leading to malformed XML.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[fapa (fa-pa)]

Same here.

XML Parsing Error: not well-formed
Location: http://geoip.ubuntu.com/lookup
Line Number 1, Column 254:

<?xml version="1.0" encoding="UTF-8"?><Response><Ip>xxx.xx.xxx.xxx</Ip><Status>OK</Status><CountryCode>DE</CountryCode><CountryCode3>DEU</CountryCode3><CountryName>Germany</CountryName><RegionCode>02</RegionCode><RegionName>Bayern</RegionName><City>Neus\uffff\ufffd</City><ZipPostalCode></ZipPostalCode><Latitude>48.4000</Latitude><Longitude>10.8333</Longitude><AreaCode>0</AreaCode><TimeZone>Europe/Berlin</TimeZone></Response>