bugGNU GRUB - Bugs: bug #56390, Fetches (e.g. HTTP) fail from...

 
 

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bug #56390: Fetches (e.g. HTTP) fail from dual-stacked hosts

Submitter:  Faidon Liambotis <paravoid>
Submitted:  Sun 26 May 2019 02:02:36 AM UTC
 
Category:  Network Severity:  Major
Priority:  5 - Normal Item Group:  Software Error
Status:  None Privacy:  Public
Assigned to:  None Originator Name: 
Open/Closed:  Open Release:  Git master
Release:  Reproducibility:  Every Time
Planned Release:  None

Sun 26 May 2019 02:02:36 AM UTC, original submission:  

Assuming:
- GRUB has an IPv4 or IPv6 address (but not both)
- We want to fetch something from example.org (e.g. (http,example.org)/linux)
- example.org is dual-stacked, i.e. has both A and AAAA DNS records

One every N fetches will fail, at random.

Easily reproducible using nslookup, where it returns either the A or the AAAA, basically at random:

grub> net_nslookup example.org
93.184.216.34
grub> net_nslookup example.org
93.184.216.34
grub> net_nslookup example.org
2606:2800:220:1:248:1893:25c8:1946
grub> net_nslookup example.org
93.184.216.34
grub> net_nslookup example.org
2606:2800:220:1:248:1893:25c8:1946
grub> net_nslookup example.org
93.184.216.34

Faidon Liambotis <paravoid>

 

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No files currently attached

 

Depends on the following items: None found

Items that depend on this one: None found

 

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