This is what I get when I run zypper up:
**#** zypper up
Loading repository data...
Reading installed packages...
The following NEW package is going to be installed:
yast2-trans
The following 2 packages are going to be REMOVED:
yast2-trans-en yast2-trans-en_US
The following 34 packages are going to be upgraded:
MozillaFirefox MozillaFirefox-branding-openSUSE MozillaThunderbird kmozillahelper libavcodec57 libavcodec58_134 libavfilter7_110 libavformat57 libavformat58_76 libavresample4_0 libavutil55 libavutil56_70 libfreebl3 libfreebl3-hmac libgstphotography-1_0-0
libopencore-amrnb0 libopencore-amrwb0 libpostproc54 libpostproc55_9 librtmp1 libsoftokn3 libsoftokn3-hmac libswresample2 libswresample3_9 libswscale4 libswscale5_9 libvo-amrwbenc0 libx264-161 libx265-199 libxvidcore4 mozilla-nspr mozilla-nss mozilla-nss-certs
skypeforlinux
34 packages to upgrade, 1 new, 2 to remove.
Overall download size: 105.8 MiB. Already cached: 134.6 MiB. After the operation, 170.4 MiB will be freed.
**Continue? [y/n/v/...? shows all options] (y): **
In cache libgstphotography-1_0-0-1.16.3-pm153.3.6.2.x86_64.rpm (1/35), 61.9 KiB ( 34.2 KiB unpacked)
In cache libx264-161-0.161+git20200912.d198931a-pm153.2.2.x86_64.rpm (2/35), 504.2 KiB ( 1.7 MiB unpacked)
In cache libavutil55-3.4.8-pm153.5.4.x86_64.rpm (3/35), 251.7 KiB (550.0 KiB unpacked)
In cache libopencore-amrwb0-0.1.5-pm153.1.3.x86_64.rpm (4/35), 53.7 KiB ( 84.1 KiB unpacked)
In cache libvo-amrwbenc0-0.1.3-pm153.1.6.x86_64.rpm (5/35), 71.2 KiB (128.2 KiB unpacked)
In cache libavutil56_70-4.4-pm153.2.4.x86_64.rpm (6/35), 270.3 KiB (541.9 KiB unpacked)
In cache libxvidcore4-1.3.7-pm153.1.6.x86_64.rpm (7/35), 209.0 KiB (697.0 KiB unpacked)
In cache libopencore-amrnb0-0.1.5-pm153.1.3.x86_64.rpm (8/35), 98.0 KiB (172.2 KiB unpacked)
In cache libx265-199-3.5-pm153.2.2.x86_64.rpm (9/35), 1.1 MiB ( 15.6 MiB unpacked)
In cache librtmp1-2.4.20151223.fa8646d-pm153.1.8.x86_64.rpm (10/35), 65.6 KiB (133.1 KiB unpacked)
In cache libswscale4-3.4.8-pm153.5.4.x86_64.rpm (11/35), 180.8 KiB (498.4 KiB unpacked)
In cache libpostproc54-3.4.8-pm153.5.4.x86_64.rpm (12/35), 87.2 KiB ( 94.3 KiB unpacked)
In cache libswresample2-3.4.8-pm153.5.4.x86_64.rpm (13/35), 93.2 KiB (110.4 KiB unpacked)
In cache libpostproc55_9-4.4-pm153.2.4.x86_64.rpm (14/35), 99.6 KiB (116.2 KiB unpacked)
In cache libavresample4_0-4.4-pm153.2.4.x86_64.rpm (15/35), 104.9 KiB (144.4 KiB unpacked)
In cache libswresample3_9-4.4-pm153.2.4.x86_64.rpm (16/35), 105.7 KiB (136.3 KiB unpacked)
In cache libswscale5_9-4.4-pm153.2.4.x86_64.rpm (17/35), 202.2 KiB (564.3 KiB unpacked)
In cache libavcodec57-3.4.8-pm153.5.4.x86_64.rpm (18/35), 4.0 MiB ( 11.0 MiB unpacked)
In cache libavcodec58_134-4.4-pm153.2.4.x86_64.rpm (19/35), 4.3 MiB ( 11.8 MiB unpacked)
In cache libavformat57-3.4.8-pm153.5.4.x86_64.rpm (20/35), 873.3 KiB ( 2.1 MiB unpacked)
In cache libavformat58_76-4.4-pm153.2.4.x86_64.rpm (21/35), 977.8 KiB ( 2.3 MiB unpacked)
In cache libavfilter7_110-4.4-pm153.2.4.x86_64.rpm (22/35), 1.2 MiB ( 3.7 MiB unpacked)
In cache MozillaFirefox-branding-openSUSE-68-lp153.8.2.x86_64.rpm (23/35), 14.0 KiB ( 8.4 KiB unpacked)
In cache libfreebl3-3.68-lp153.1.2.x86_64.rpm (24/35), 384.5 KiB (764.7 KiB unpacked)
In cache mozilla-nspr-4.32-lp153.1.2.x86_64.rpm (25/35), 116.2 KiB (275.6 KiB unpacked)
In cache libfreebl3-hmac-3.68-lp153.1.2.x86_64.rpm (26/35), 92.9 KiB ( 1.8 KiB unpacked)
In cache mozilla-nss-certs-3.68-lp153.1.2.x86_64.rpm (27/35), 251.4 KiB (513.6 KiB unpacked)
In cache libsoftokn3-3.68-lp153.1.2.x86_64.rpm (28/35), 262.6 KiB (461.9 KiB unpacked)
In cache mozilla-nss-3.68-lp153.1.2.x86_64.rpm (29/35), 724.4 KiB ( 1.9 MiB unpacked)
In cache libsoftokn3-hmac-3.68-lp153.1.2.x86_64.rpm (30/35), 92.9 KiB ( 1.8 KiB unpacked)
Retrieving package MozillaFirefox-91.0-lp153.1.2.x86_64 (31/35), 53.4 MiB (212.3 MiB unpacked)
Retrieving: MozillaFirefox-91.0-lp153.1.2.x86_64.rpm .....................................................................................................................................................................................................[error (380.0 KiB/s)]
Download (curl) error for 'https://download.opensuse.org/repositories/mozilla/openSUSE_Leap_15.3/x86_64/MozillaFirefox-91.0-lp153.1.2.x86_64.rpm':
Error code: Curl error 56
Error message: OpenSSL SSL_read: SSL_ERROR_SYSCALL, errno 104
**Abort, retry, ignore? [a/r/i/...? shows all options] (a): **
Is anybody else having the same problem with the Firefox file?
Also, how do I tell zypper up to ignore the offending file and install the rest?
Thanks.